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黄芪不同有效成分对电离辐射致 BMSCs DNA 损伤防护作用的
比较研究 Δ
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李洋洋 ,张苡铭 ,魏孔熙 ,周 婷 ,何进鹏 ,丁 楠 ,周谷城 ,史桐凡 ,柯宜诚 ,牛 帆 ,刘永琦 ,张利英 1,2 #
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(1.甘肃中医药大学/甘肃省高校重大疾病分子医学与中医药防治研究省级重点实验室,兰州 730000;2.敦煌
医学与转化省部共建教育部重点实验室,兰州 730000;3.甘肃省空间辐射生物学重点实验室/中国科学院近代
物理研究所,兰州 730000)
中图分类号 R285 文献标志码 A 文章编号 1001-0408(2020)24-2987-06
DOI 10.6039/j.issn.1001-0408.2020.24.07
摘 要 目的:比较黄芪不同有效成分对电离辐射致人骨髓间充质干细胞(BMSCs)DNA损伤的防护作用。方法:采用2 Gy X射
线直接辐照BMSCs建立辐射细胞模型。采用CCK-8法检测不同质量浓度(25、50、75、100 μg/mL)黄芪多糖、黄芪皂苷、黄芪黄酮
辐射前干预1 d+辐射后干预1~5 d对辐射BMSCs增殖的影响,筛选给药浓度和辐射后继续干预时间。将辐射BMSCs分为辐射
组、黄芪多糖组、黄芪皂苷组、黄芪黄酮组,后3组辐射前后均使用适宜的相应药物进行干预,另设空白组进行比较;采用胞浆分裂
阻滞微核法检测辐射后干预适宜时间的微核细胞率和细胞微核率,免疫荧光法检测辐射后干预适宜时间细胞中53BP1焦点簇数
量,并对不同时间点(0.5、2、12、24 h)的53BP1焦点簇数量进行比较。结果:与空白组比较,辐射组BMSCs的OD值显著降低(P<
0.05或P<0.01);与辐射组比较,50 μg/mL黄芪多糖、黄芪皂苷、黄芪黄酮继续干预2~3 d时BMSCs的OD值均显著升高,其余剂
量组仅部分时间点有显著差异(P<0.05或P<0.01);综合考虑确定给药浓度为50 μg/mL,辐射后继续干预时间为2 d。与空白组
比较,辐射组、黄芪多糖组、黄芪皂苷组、黄芪黄酮组微核细胞率和细胞微核率均显著升高,辐射组和黄芪多糖组细胞中53BP1焦
点簇数量均显著增加(P<0.01)。与辐射组和黄芪黄酮组比较,黄芪多糖组和黄芪皂苷组微核细胞率、细胞微核率和53BP1焦点
簇数量(辐射后干预0.5、2、12 h)均显著降低或减少,且黄芪多糖组微核细胞率和细胞微核率均显著低于黄芪皂苷组(P<0.05);超
过24 h检测不出53BP1焦点簇。结论:黄芪多糖和黄芪皂苷对辐射所致的BMSCs DNA损伤均有防护作用,其中黄芪多糖防护效
果优于黄芪皂苷;黄芪黄酮对辐射所致的DNA损伤无防护作用。
关键词 黄芪多糖;黄芪黄酮;黄芪皂苷;电离辐射;骨髓间充质干细胞;DNA损伤
Comparative Study on the Protective Effects of Different Effective Components of Astragali Radix against
Ionizing Radiation-induced BMSCs DNA Damage
LI Yangyang ,ZHANG Yiming ,WEI Kongxi ,ZHOU Ting ,HE Jinpeng ,DING Nan ,ZHOU Gucheng ,SHI
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Tongfan ,KE Yicheng ,NIU Fan ,LIU Yongqi ,ZHANG Liying (1.Gansu University of Traditional Chinese
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Medicine/Provincial Key Lab for Molecular Medicine of Major Diseases and the Prevention and Treatment with
Traditional Chinese Medicine Research in Gansu Colleges and Universities,Lanzhou 730000,China;2. Key
Lab of Dunhuang Medicine and Transformation,Ministry of Education,Lanzhou 730000,China;3. Gansu Key
Laboratory of Space Radiobiology,Institute of Modern Physics/Chinese Academy of Sciences,Lanzhou 730000,
China)
ABSTRACT OBJECTIVE:To compare the protective effects of different effective components of Astragali radix against DNA
damage of human bone marrow mesenchymal stem cells(BMSCs)induced by ionizing radiation. METHODS:2 Gy X-rays were
used to directly irradiate BMSCs to establish a radiation model. CCK-8 method was used to detect the effects of different mass
concentrations (25,50,75,100 μ g/mL) of astragalus polysaccharide,astragalus saponin and astragalus flavonoids for 1 day
before radiation + 1 to 5 days after radiation on the proliferation of BMSCs. The dose concentration and the duration of intervention
after radiation were selected. The irradiated BMSCs were divided into radiation group,astragalus polysaccharide group,astragalus
saponin group and astragalus flavonoids group. The last three
Δ 基金项目:国家自然科学基金资助项目(No.81973595);甘肃省
groups were treated with appropriate dosage of corresponding
高等学校科研项目(No.2015A-095);西北中藏药协同创新中心重点协
drugs before and 2 days after radiation,and a blank group
同项目(No.XBXT2015-1)
was set for comparison. Cytoplasmic division arrest
*硕士。研究方向:中西医结合防治肿瘤。E-mail:1576376429@
qq.com micronucleus method was used to detect micronucleus cell rate
# 通信作者:副教授,硕士生导师,博士。研究方向:中西医结合 and cell micronucleus rate after appropriate time of
防治肿瘤。E-mail:zhangliying201212@163.com intervention following radiation;immunofluorescence method
中国药房 2020年第31卷第24期 China Pharmacy 2020 Vol. 31 No. 24 ·2987 ·